ASTROSAT CZTI

Data Quality Report

Orbit 39060

Creation date: 2024-06-27T21:59:54.406828
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A12_077T06_9000005430_39060cztM0_level2.fits modeM0/AS1A12_077T06_9000005430_39060cztM0_level2_quad_clean.evt
Size (bytes)418,887,360103,901,760
Size399.5 MB 99.1 MB
Events in quadrant A4,821,875700,788
Events in quadrant B2,784,884718,206
Events in quadrant C4,128,466663,368
Events in quadrant D3,288,329630,583

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187683
B0125542
C0164132
D0143562

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6204420.676983%
B620480.128949%
C62043084.964539%
D62041131.821406%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 9310 6206 22 22 0.24% 0.35%
B 9310 6206 0 0 0.00% 0.00%
C 9310 6206 211 211 2.27% 3.40%
D 9310 6206 93 93 1.00% 1.50%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 222 1582515 11327.24 687 671 139.6
A 10 83 463119 3311.49 687 671 139.6
A 13 248 84384 599.45 687 671 139.6
B 0 190 20351 147.5 687 666 133.5
B 0 230 19870 143.89 687 666 133.5
B 12 111 16671 119.92 687 666 133.5
C 15 208 1208251 7909.91 658 662 152.7
C 15 214 251995 1646.27 658 662 152.7
C 1 23 78138 507.48 658 662 152.7
D 2 249 306707 1865.08 668 648 164.1
D 1 47 253813 1542.75 668 648 164.1
D 2 250 37744 226.06 668 648 164.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter